|Week|Date|Opponent|Result|Attendance|
|---|---|---|---|---|
|1|September 13, 1987|Cleveland Browns|W 28–21|59,900|
|2|September 20, 1987|at Philadelphia Eagles|L 27–21|57,485|
|–|September 27, 1987|Atlanta Falcons|canceled||
|3|October 4, 1987|Los Angeles Rams|W 37–10|29,745|
|4|October 11, 1987|at St. Louis Cardinals|L 24–19|11,795|
|5|October 18, 1987|at Chicago Bears|W 19–17|46,813|
|6|October 25, 1987|San Francisco 49ers|L 24–22|60,497|
|7|November 1, 1987|at Atlanta Falcons|W 38–0|42,196|
|8|November 8, 1987|at Los Angeles Rams|W 31–14|43,379|
|9|November 15, 1987|at San Francisco 49ers|W 26–24|60,436|
|10|November 22, 1987|New York Giants|W 23–14|67,639|
|11|November 29, 1987|at Pittsburgh Steelers|W 20–16|47,896|
|12|December 6, 1987|Tampa Bay Buccaneers|W 44–34|66,471|
|13|December 13, 1987|Houston Oilers|W 24–10|68,257|
|14|December 20, 1987|at Cincinnati Bengals|W 41–24|43,424|
|15|December 27, 1987|Green Bay Packers|W 33–24|68,364|

Question: what week was their last loss?
Answer: 6